Improvement in eetoets for concentrating sulphuric acid



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J. n; PERRIN' AND JOSEPH SAUNDERS, or BROOKLYN, NEW 'YORK.

Letters Patent No. 78,760, dated Jame 9, 1868.

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TO ALL WHOM IT MAY GONGERN:

Be it known that we, J. D. Poems and JOSEPH SAUNDERS, of Brooklyn, inthe county of Kings, and State of'New York, have invented a new anduseful Improvement in Retorts; and we do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to make and 'usethe sameyreferencebeing had to the accompanying drawing, forming part of thisspecification, in which- Figure 1 represents'an end elevation of ourinvention.

Figure 2 is anelevation, partly in section, of'the same.

Similar letters of reference indicate like parts. a l

This invention relates to a new manner of arranging retorts forconcentrating sulphuric acid, and for other purposes, so thatcirculationofthe liquid to be concentrated or evaporated may be produced in aseries of retorts at once, the liquid flowing from one retort to theother.'

Heretofore, retorts were only used separately, that is, the matter ineach retort was treated in thatretort, and, when-finished, wasdischarg'ed therefrom. g V

Communication between aseries ofretorts, to allow the passage of theliquid from one to the other, has heretofore never been established. V Yi Our invention consists in arranging-a. spout or pipeat the upper-partof each retort,.-through which the liquid can overflow into'jthe nextretort, the spout leading it into a funnel formed at the upper end of a.pipe, which extends nearly to thebottom of the next retort. I i

In this manner the liquid is taken froru the top of one retort to thebottom of the other, and constant circulation is thus produced; V

A, in the drawing, 'represcnts a glass or other retort, made of suitablesize and shape.

A series of such retorts is intended to be set up'in a furnace, upon aninclined plane or otherwise, so that they stand lower toward one of thefurnaces.

On the upper partofeach retort is arranged a-projecting pipe orspout,.a, as shown.

B is a pipe inserted through a perforation in the upper part of eachretort, vertically into the same, so as nearly to reach with its lowerend to the bottom.of the retort, as shown in fig. 2.

On the upper end of-the pipe B is formed a funnel, b, which is on theoutside of the retort, as show...

The end of the pipe or spout a of one retort leads to the funnel-b ofthe next lower retort, as shown, and thus a passage, a b is providedbetween every two adjacent retorts, through which the liquid is carriedfrom the top of the upper retort to the bottom of"the lower one, andcomplete circulation of the contents of the var-ionsretorts is thusproduced. p

The vapors from the various retorts are, through the necks G, carried tosuitable condensing-chambers, as indicated in fig. 1. l i

The funnels b may,,if. desired, be omitted if the ends of the pipes 01.are small enough to fit into 13.

Having thus described our invention, we claim as new, and-desire tosecure by Letters Patent- Providing a retort with a projecting pipe orspout, a, and with a pipe, B, substantially as described, so thatcommunication between various retorts can be established, as hereinspecified.

' J. D. PERRIN,

JOSEPH SAUNDERS.

Witnesses:

WM. F. McNAM-Am, ALEX. F. Rosanne.

